Side bearing.



G. L. ALLEN.

SIDE BEARING.

APPLICATION FILED JULY 26, 1912.

1,084,522. y Patented Jap. 13, 1914.

C) 5m 15e/mko@ @afge W//en loihereof.

GEORGE L. ALLEN, OF WILMINGTON, NORTH CAROLINA.

SIDE BEARING.

Los-1,522.

Specicationof Letters Patent. y Patented Jail. 13, 1914.

Application led July 26, 1912. Serial No. 711,762.`

I To all 'whom 'it may concern:

5 over, State of North. Carolina, have invented certain new and useful Improvements in SideBearings, of which the following is a description, reference being had to the accompanying drawings, forming a part My invention relates to an improvedform of side bearing in which there is little or no friction between the moving parts and yet which retains to a large degree that ruggedness and simplicity which is so essential to railway devices. y

To this end my invention consists in certain novel features of construction which are clearly illustrated in the accompanying drawing and described in theV following specification. l In the drawing Figure 1 is a view in elevation with a portion of the casing removed, of an improved form of side bearing. Fig. 2 is an end view of the same. Fig. 3 shows a slightly modified form. y

The side bearing is composed of three elements. An upper member 1 which is provided with a bearing surface 2 and side walls 3, saidside walls inclosing a cylindrical roller 4 which is to be regarded as the second element of the combination herein described. rIhe roller 4 is interposed between the upper member 1 and a lower member 5 which latter member is provided with a suitable bearing surface 6 for the roller to travel over, said lower member being the third element of the aforementioned combination.

In order to more fully explain the various parts they will be taken up in order, in

' which the upper member 1, as illustrated in' Figs. 1 andA 2, is box likein construction and is composed of a top base plate 15, said base late provided with means whereby it may lie attached to the body of the car, the under side of said base plate forms a bearing surface 2 for the roller 4 toytravel on and has teeth like projections 7 extending therefrom. The side walls 3 of the u per member are provided with a longitu incl recess 8 in which the trunnions 9 of the roller `4 move. Entrance to the longitudinal recess 8 is provided at one end to allow for the entrance of the Aroller for the assembling of the various parte. This entrance is formed by cutting away a portion of the casing thereby forming the lip or ledge 10. The box-like construction of member 1 serves to keep the cylindrical roller in position and at the same time protect it and prevent it from becoming clogged with d ust and other objectionable materialY which would tend to mar the smooth working of the herein desribed bearing. The roller, as illustrated in Figs. 1 and 2 is cylindrical in shape, and provided with tooth-like depressions 14 which are adapted to engage the projections or teeth 7 of the upper member, the roller, as illustrated herewith, is provided with three of the above mentioned depressions which extend around the roller for approximately one-third of the circumference, diametrically opposed to the above mentioned depressions are teeth-like projections 12 which serve to cooperate with the lower member 5 upon which it rolls. Upon 'the outer edges of the cylindrical `.roller 4 and formed integral therewith are Lrnnnions 9' cylindrical in shape and having a grooved portion 1l as illustrated in Figs. 1 and 2,

` the purpose of these "trunnions .with their grooved portions being more fully taken up*` and described in a later paragraph of the present specification.

kThe bottom plate 5, which has already been mentioned as the third element of the novel combination, consists of a plate having holes 13 arranged therein, said holes being tooth-like in form and arranged to engage the teeth 12 of the roller 4. In the present instance there being three such tooth-like depressions which correspond in number to the teeth 12 to the roller 4. The plate 5 is provided. with means whereby it may be attached to a truck and securely held thereto.

Taking up now the working of lthe present device the trunnions on the roller have been provided with grooved sides the object of which is vto allow the roller to be slid into position, the grooved side being upmost and passing beneath the lip 10 of the casing 3. The roller thus having been placed into position, the teeth and depressions of the various members operate in conjunction. The roller., allows the upper and lower plate to shift their relative position with little or 4no friction, and should the above mentioned shifting be excessive the roller will take up a position as shown in dotted lines in Fig. 1, and it is to be noted in this connection that lower member,

the trunnion will prevent the roller from leaving the housing and thus make it impossible for the accidental loss of said roller. Fur-- thermore with the teeth arranged as shown should the car becomederailed and the truck therefor subject to unusual turning the teeth will become disengaged as shown in the dotted position in Fig. l and locking between the car body and the truck is 'thereby rendered impossible. Further when the truck is moved horizontally back into its normal position after a dera-ilment the teeth of the roller automatically rengage themselves without the necessity of jacking up car. In the normal operation of the various parts vthe roller cannot leave the casing as' -the grooved s'ide of the t'runnions will not come in the proper position to pass beneath the lip l0, as can be seen by the dotted lines in Fig. l.

The present invention may take a somewhat modified form as illustrated in Fig. 3 in which the plate and tooth-like projections and depressions on the plate have been arranged on the are of a circle, the cylindrical roller is shown as having the form of truslum or" a cone and the depressionsl and pro. jections have been reversed with 'regard to the upper and lower plates. 0f course, this does not depart from the spirit of my invention and neither do I wish to limit myselt' to any' special number of teeth but have merely shown three as illustrating an operative number.

Having thus fully described the construction and operation of my device what I claim to be new and original with me is:

l. In a side bearing, an upper member, a

a roller interposed therebetween, positive means on the upper member, lower member and roller determining the relative positions of each, said upper member comprising a housing of the'said roller, said ,housing having a limited entrance thereto,v the trunnions of for the trunnions said roller provided with a grooved portion adapted to lit the limited housing entrance during the placing of the roller in position, the roller having been placed within the housing it being impossible Stor the accidental escapement therefrom.

2. In a side bearing, an uppermember comprising a base plate Vand housing, a lower member, a roller interposed therebetween, trunnions formed at the ends of said roller having a grooved portion thereon, said grooved portion allowing the trunnions to pass within a limited entrance to said housing, tooth projections, said lower member provided with a plurality of apertures, said roller provided with raised teeth for a p0rtion of its circumference, said teeth and apertures of theI various members adapted to cooperate.

3. In a side bearing, an upper member, a lower member, a roller interposed therebetween, the upper member comprising a base plate, walls extending therefrom, said walls provided with longitudinal recesses closed at one end and having a limited opening at their other, trunnions at the ends of-said roller having a grooved portion allowingr the trunnions into said longitudinal recesses, said upper 'base plate provided with raised teeth, said lower member provided with a plurality of apertures, said depression being extended through the entire lower member, thereby' preventing any accumulation of toreign material therein, said roller provided with raised teeth and apertures engaging the teeth and said apertures oi' said upper and lower members.

This specification signed and this 29th day of June A. 13.1912.

A i GEORGE L. ALLEN. lathe presence ot?.-

C. L. MEISTER,

l R. HUNT.

witnessed Copies or this patent maybe obtained for ve cents each, by addressing the Commissioner of Patents.

Washington, D. C.

roller to pass between the said walls and the said base plate provided with raised 

